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Summary of Contents for Joy-it JT-DPM86 Series
- Page 1 JT-DPM86XX Programmable lab power supply Joy-IT powered by SIMAC Electronics GmbH - Pascalstr. 8 - 47506 Neukirchen-Vluyn - www.joy-it.net...
- Page 2 1. DEBUG DPM86XX WITH SERIAL ASSISTANT According to the "simple communication protocol" and "MODBUS communication protocol" provided by us, we can control the DPM86XX. The two communication protocols can be freely selected in the DPM86XX function "5-CS", 0 means "custom communication protocol", 1 means "MODBUS communication protocol".
- Page 3 Com- Command Format Format description Example Example mand description Description set both vol- :01w20=**** "****" means the vol- :01w20=12 means that the voltage and cur- tage and cur- ,####, tage setting, "####" 34,12345, rent settings qual rent settings means the current 12.34V setting 12.345A...
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Page 4: Modbus Communication Protocol
Com- Command Format Example Example Description mand description Read tempera- :01r33=0, Send: :01w33=0, It indicates that the inter- ture nal temperature of the Return: :01r33=30, machine is 30°C. 3. MODBUS COMMUNICATION PROTOCOL 3.1 Communication protocol overview: The communication protocol for this device is specifically MODBUS RTU. This can be used via RS485. - Page 5 3.4 Function field: The Function code field tells the addressed slave which function it should execute. This device supports only the functions 0x03 0x06 0x10. Function code Definition Operations (binary) 0x03 Read holding register Read one or more registers in the slave. 0x06 Write single rgister Writes binary data to a single register.
- Page 6 3.7 Register map for this device Name Explanation Number of Bytes radix point unit read | write postal address Set-U Voltage setting r | w 0000H value Set-I Current setting r | w 0001H value out switch r | w 0002H CCCV output state...
- Page 7 This process is repeated until eight shifts have been performed. After the last (eighth) shift, the next eight-bit character is exclusive ORed with the current value of the register, and the process is repeated for eight more shifts as described above. The final content of the register, after all chara- cters of the message have been transferred, is the CRC value.
- Page 8 Message format returned from slave: Slave responds Number Information Notes of Bytes returned Slave address From slave address 01H Function code Write single register Register address 0000H Register address contents of the 0960H Value read read register CRC checksum 8FB2H CRC checksum from slave 3.
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Page 9: Sonstige Informationen
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